EP0083087A3 - High efficiency optical tank for two-color liquid crystal light valve image projection with color selective prepolarization - Google Patents

High efficiency optical tank for two-color liquid crystal light valve image projection with color selective prepolarization Download PDF

Info

Publication number
EP0083087A3
EP0083087A3 EP82111968A EP82111968A EP0083087A3 EP 0083087 A3 EP0083087 A3 EP 0083087A3 EP 82111968 A EP82111968 A EP 82111968A EP 82111968 A EP82111968 A EP 82111968A EP 0083087 A3 EP0083087 A3 EP 0083087A3
Authority
EP
European Patent Office
Prior art keywords
color
liquid crystal
high efficiency
light valve
image projection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82111968A
Other versions
EP0083087B1 (en
EP0083087A2 (en
Inventor
Ralph J. Gagnon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Raytheon Co
Original Assignee
Hughes Aircraft Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/334,678 external-priority patent/US4464019A/en
Priority claimed from US06/334,681 external-priority patent/US4544237A/en
Application filed by Hughes Aircraft Co filed Critical Hughes Aircraft Co
Publication of EP0083087A2 publication Critical patent/EP0083087A2/en
Publication of EP0083087A3 publication Critical patent/EP0083087A3/en
Application granted granted Critical
Publication of EP0083087B1 publication Critical patent/EP0083087B1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3167—Modulator illumination systems for polarizing the light beam
EP82111968A 1981-12-28 1982-12-23 High efficiency optical tank for two-color liquid crystal light valve image projection with color selective prepolarization Expired EP0083087B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US334678 1981-12-28
US06/334,678 US4464019A (en) 1981-12-28 1981-12-28 Two-color liquid crystal light valve image projection system with color selective prepolarizers in single optical tank
US06/334,681 US4544237A (en) 1981-12-28 1981-12-28 High efficiency optical tank for two-color liquid crystal light valve image projection with color selective prepolarization
US334681 1981-12-28

Publications (3)

Publication Number Publication Date
EP0083087A2 EP0083087A2 (en) 1983-07-06
EP0083087A3 true EP0083087A3 (en) 1984-08-15
EP0083087B1 EP0083087B1 (en) 1987-08-12

Family

ID=26989316

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82111968A Expired EP0083087B1 (en) 1981-12-28 1982-12-23 High efficiency optical tank for two-color liquid crystal light valve image projection with color selective prepolarization

Country Status (5)

Country Link
EP (1) EP0083087B1 (en)
CA (1) CA1212852A (en)
DE (1) DE3276994D1 (en)
IL (1) IL67569A (en)
NO (1) NO165896C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4690526A (en) * 1985-09-12 1987-09-01 Hughes Aircraft Company Prism assembly for a single light valve full-color projector
US4824214A (en) * 1987-07-27 1989-04-25 Hughes Aircraft Company Unitary prepolarizing prism assembly for a four color liquid crystal light valve image projector
DE102004033205A1 (en) * 2004-07-09 2006-02-09 Fresenius Kabi Deutschland Gmbh Sterile port

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127322A (en) * 1975-12-05 1978-11-28 Hughes Aircraft Company High brightness full color image light valve projection system
US4191456A (en) * 1979-03-08 1980-03-04 Hughes Aircraft Company Optical block for high brightness full color video projection system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127322A (en) * 1975-12-05 1978-11-28 Hughes Aircraft Company High brightness full color image light valve projection system
US4191456A (en) * 1979-03-08 1980-03-04 Hughes Aircraft Company Optical block for high brightness full color video projection system

Also Published As

Publication number Publication date
NO824373L (en) 1983-06-29
CA1212852A (en) 1986-10-21
IL67569A (en) 1988-11-30
EP0083087B1 (en) 1987-08-12
NO165896C (en) 1991-04-24
IL67569A0 (en) 1983-05-15
DE3276994D1 (en) 1987-09-17
NO165896B (en) 1991-01-14
EP0083087A2 (en) 1983-07-06

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